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Grandee GSCW 10-15 Ext Oil - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can check your boilers rating by selecting it's make and model below. Ratings are based on the SEDBUK Rating which is an indicator of its efficiency when used within an average domestic household, it's a great benchmark for comparing new boilers and also assessing whether your current boiler would be better off being replaced due to low efficiencies.

For new boiler installations call British Gas Boilers on 0800 327 7119 for a no-obligation quote, alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

Grandee GSCW 10-15 Ext Efficiency

SAP seasonal efficiency90.8%
Rating bandBand A


ManufacturerGrandee Boilers
ModelGSCW 10-15 Ext
Fuel TypeOil
Flue TypeOpen or Room-Sealed
FanNo Fan
Output (kW)10 - 15
Boiler ID
Manufactured From/To2008 - current


The Grandee GSCW 10-15 Ext is an 'A' rated boiler which has an excellent efficiency of 90.8%.

The GSCW 10-15 Ext is a Condensing Conventional boiler with a maximum power output of 15kw that uses Oil as its fuel source.

As this boiler is 'A' rated it will provide efficient heating and subsequently reduce fuel bills and carbon dioxide emissions.

Similar Grandee Boilers to the GSCW 10-15 Ext
(Condensing Oil Conventional)

Results ordered by efficiency. Some models may be obsolete.

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